permanent clones??

Rodger Whitlock
Fri, 09 Jul 2004 13:15:49 PDT
On  6 Jul 04 at 9:35, zonneveld wrote:

> ...most clones of vegetatively propagated plants have to be
> replaced by new ones due to loss of vigour.

But isn't that loss of vigor usually due to the slow buildup of the 
viral titer?

I am aware of a number of old clonal cultivars that were very weak 
and very tricky to keep going but which recovered vigor when put 
through tissue culture to eradicate viruses.

Rodger Whitlock
Victoria, British Columbia, Canada
"To co-work is human,
to cow-ork, bovine."

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